A four-channel absorbance detector was developed for simplifying the flow-injection analysis (FIA). This detector used four light-emitting-diodes (LEDs) as light sources; their wavelengths were 470, 495, 590 and 635 nm, respectively. Their amplitudes were modulated electronically with different frequencies. The light emissions from them were merged by plastic-core fiber optics, and were detecte...

In this paper, we present current amplifier based transimpedance (TIA) for biosensor applications. Proposed design has low-noise, high Transimpedance gain that can be used low measurement The TIA is implemented in order to resolve the fabrication issues related value feedback resistor. design, input block a amplitude amplifier. designed 90 nm complementary metal-oxide semiconductor (CMOS) techn...

An active antenna for transmitter application in S frequency band is designed and analyzed using harmonic balance technique which is based on the nonlinear model of active devices. In this active antenna, the amplifier is integrated with the radiator which is a rectangular patch antenna. This patch antenna is analyzed employing full-wave momentum method. By applying nonlinear model of transisto...

We present experimental data showing a significant dependence of light absorption on temperature in photorefractive LiNbO3 :Fe crystals. The results are successfully explained by assuming that the widths of the Fe absorption bands in the visible and in the infrared spectral region depend on temperature. The findings are of relevance for thermal fixing of holograms. Furthermore, a temperature-in...

This paper describes the multistage morphological segmentation method (MSMA) for microscopic cell images. The proposed method enables to study the cell behavior using a sequence of two types of microscopic images: bright field images and/or fluorescent images. The proposed method is based on two types of information: the cell texture coming from the bright field images and intensity of light em...

A possible way of generating nonclassical states light is via the truncation a given state in Fock basis. In recent work, we presented an alternative scheme for such quantum scissors [ Phys. Rev. 104 , 033715 ( 2021 ) PLRAAN 1050-2947 10.1103/PhysRevA.104.033715 ], employing nondegenerate parametric amplifier, beam splitter, and photodetectors. An advantage this setup that it does not require g...

− A piezoelectric accelerometer output voltage with zero shift was induced by the low-frequency response of the charge amplifier. So we designed a virtual amplifier with same input-output characteristic as the charge amplifier, and shock sensitivities of a piezoelectric accelerometer were evaluated by applying the input acceleration to the virtual amplifier. The shock sensitivities were compara...